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XFX HD 7850 Voltage IS locked (SEE FIRST POST) - Page 2

post #11 of 29
Thread Starter 
haha thanks, but I meant that I saw how it was called there, so I already registred my card wink.gif.
But thanks for your support, I'll flash the bios soon and tell you how it went.
post #12 of 29
Thread Starter 
Ok, so maybe I should open a new thread for this, but here we go: I tried flashing with ati winflash, and obviously it went wrong (it always does). So I tried to flash, and then ati winflash said: cannot erase rom. Well, not a problem, I closed the program, googled the problem, THE PC WAS WORKING JUST FINE. After reading looking the error up I decided I'd try it another time using DOS, as I probably should have done. Then I rebooted the pc to restore my cpu overclock, but oh no, it doesn't boot anyymore. The mainboard makes an extra PEEP now when I start up, and the screen stays black. Now I just can't comprehend why it doesn't work anymore. I mean the pc worked JUST FINE after the error. But now it doesn't boot. ANY advice on this is most welcome, do I need to install another graphics card en reflash my back-up? Because it just doesn't seem right, the computer worked, it didn't freeze up, but now I get a black screen. I'd be overgrateful for any advice on this!
post #13 of 29
This is weird. I've flashed the exact same card at least 10 times and I haven't encountered any of these problems. NEVER flash under Windows. rolleyes.gif Maybe you can try to reset CMOS or something.
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post #14 of 29
You need the following:-
*The cards BIOS you want to flash
*Latest ATIFlash 3.99
*DOS bootable USB stick - GUIDE HERE

Instructions - DO AT OWN RISK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1). Copy the XFX BIOS and ATIFLASH onto your bootable USB stick and rename the BIOS file to "XFX7850.ROM"
2). Change you PC BIOS so that it boots from USB stick.
3). Boot to USB Stick
4). At DOS prompt backup your existing BIOS with command "atiflash -s 0 BACKUP.ROM"
5). Flash the new BIOS with command "atiflash -p -f 0 XFX7850.ROM"
6). Wait 30 seconds or so until you are told that BIOS flash is complete.
7). Restart
8). You may need to reinstall you AMD drivers because your PC sees the new BIOS as a new card.

Here's a Bios flashing guide in more detail

Here are some BIOS FILES
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post #15 of 29
Quote:
Originally Posted by El Aidge View Post

Thank you for your suggestions guys, I tried them both. Well, I was running Trixx 4.3.0, and when I looked to install an older version it didn't support the GPU at all tongue.gif
I also tried the same settings as DizzlePro suggested, and clicked reset a few times. As a matter of fact , that extended my clocks quite a bit, (core 1600/mem 2100), but the VDDC remained stubbornly 1213.
Now, I have some more information of which I forgot to mention. 1213 Mv is the standard voltage, so it was immediatly at the highest voltage. It always jumps to 1213 if I click reset.I think this is quite strange, because I just yesterday found out that I can run 1090 core/1430 mem on 1120 Mv. It also works on 1213, but I played 3 hours of battlefield 3 with 1120 Mv, so I believe it is quite stable. But still, nothing works when I go higher, to lets say 1150 core clock. Furmark immediatly crashes then, and so do games. Maybe this info helps thumb.gif
Oh and also, I've googled this problem alot of times, and not once I saw someone with exactly the same problem; maybe that is just because I bought my card two weeks ago, but I just can't imagine that if XFX really locked the cards, I would be the only person the notice it. So I assume it must be something on my end, so I'm still waiting with the bios option, since I've never done that before. (Well except for flashing my android phone, but I guess that isn't entirely the same^^)

I really wouldn't bother with the BIOS flash.

XFX just suck in general. My 5750 came with no support for voltage tweaking either and my overclock crapped out at 850/1350MHz. I knew I could get more out of the card since many people had got their 5750s to 950+ on the core (and I overlooked the fact they weren't XFX tongue.gif). Tried everything. Nothing mattered.

Tried editing the stock BIOS, flashed a number of other BIOS' including ASUS, MSI, Diamond..you name it, I tried it. Oh and I should mention that while all other 5750s came with a stock voltage of 1.125, mine came with 1.10v mad.gif

The best I got after flashing another BIOS was the default voltage going up to 1.125 BUT the clocks kept resetting to the stock 700/1150MHz. I even went uber-desperate and tried pencil-modding and what do I find? The resistor that controls core voltage was missing ENTIRELY sozo.gif

Its almost if XFX went the extra mile to ensure you can't add extra voltage no matter what. Even wonder why they offer lifetime warranty? whistle.gif Its nothing but a gimmick.

XFX cards carry a premium for show and that's about it. Hell, they don't even have a dedicated GPU tweak software of their own. "Play Hard" my posterior. More like "Play Safe"

/End rant

You might have better luck though biggrin.gif.
Edited by PunkX 1 - 9/17/12 at 12:21am
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post #16 of 29
Actually my XFX HD7850 (the one with the 7870 PCB, non-BE) did come with voltage unlocked, and in fact, voltage cap was better then most manufacturers (1.3v). With 12.6 and 12.8 using latest TriXX I had no problem. Looks like XFX changed BIOS, you should probably go look around and get a XFX 7850 bios on TPU (pretty sure these are the old ones). Also, 1.213v isn't a bad voltage as most people get 1.1-1.2ghz with that voltage.
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post #17 of 29
Thread Starter 
Ok guys, thanks for all your support! Managed to get it working again with DOS, and then flashed DizzlePro's bios. But wait, we're not finished yet tongue.gif
Because now that I have the new bios my graphics doesn't really seem to get recognized by the computer, take a look for yourself: http://www.techpowerup.com/gpuz/ehs4q/
As you can see, I've got the new bios version, but my memory is kinda cracked up (I've got only 12 GB), and the gpu clocks don't show. I've tried reinstalling the drivers, but that didn't seem to work, the driver isn't applied.
CCC reports at startup:No AMD Graphics Driver Installed or the graphics driver doesn't work correctly
Also I can't see any clocks in Trixx, so I can't report if the voltage works just yet. Please post if you know a solution, in the meantime I'll try to fix it myself thumb.gif
Edited by El Aidge - 9/17/12 at 12:23pm
post #18 of 29
Hey, just thought i'd give a heads up. XFX have begun voltage locking their cards by using non reference PCB's. I'm not quite sure how to check this on the 78xx series of cards, however for the 79xx series of cards, you can tell because the bios switch near the crossfire connectors has been removed.

You can check out my original post at reddit here:

http://www.reddit.com/r/gamingpc/comments/yxjto/xfx_have_voltage_locked_their_lineup_of_7970_dd/
post #19 of 29
Quote:
Originally Posted by Jappetto View Post

Hey, just thought i'd give a heads up. XFX have begun voltage locking their cards by using non reference PCB's. I'm not quite sure how to check this on the 78xx series of cards, however for the 79xx series of cards, you can tell because the bios switch near the crossfire connectors has been removed.
You can check out my original post at reddit here:
http://www.reddit.com/r/gamingpc/comments/yxjto/xfx_have_voltage_locked_their_lineup_of_7970_dd/

This is why XFX suck.
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Kukumonster
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A pleasant surprise :)
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post #20 of 29
Is this just an issue with the shorter single six pin pcb or even the 7870 pcb's?
To the OP
this may sound crazy but have you tried to scroll down with the arrow in TrixX?
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